bug#58447: [PATCH] In project-find-file, add absolute file name to history

[Juri Linkov]

>> I agree with Augusto that filtering that implements project-local history
>> should be the default behavior for emacs-29.  I tried your second patch
>> and it nicely handles even such sequences as `C-x p f' and `C-x p F'.
>> (and in the opposite direction from `C-x p F' to `C-x p f' it
>> filters out external files, that is expected and consistent.)
>
> That sounds like a consensus, then. I've pushed the v2 patch to emacs-29.

Thanks.  One very minor detail: when the history contains the project root
directory then it's confusing to see that M-p does nothing.  It looks like
it has no effect because it inserts an empty string.  Maybe better to
filter out empty strings?